wells



UNI [ED STATES P TE T OFFICE.

GEORGE M. WELLS, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE SOLIDITY IRONLAST COMPANY, OF NEW YORK, N. Y. I

JACK FOR LA'STS.

SPECIFICATION forming part of Letters Patent No. 281,742, dated July 24,1883,

Application filed December 18,1882. (No model.)

' D not only holds the block I) in place, but, in

To all whom it may concern Be it known that I, GEORGE M. VVELLs, ofBoston, in the county of Suffolk and State of Massachusetts, haveinvented a new and useful Improvement in Jacks for Lasts, of which thefollowing is a specification, reference being had to the accompanyingdrawings, fOlllling a part hereof, in which Figure 1 is a verticalcentral section of a portion of one form of jack with my improvementupon it. Fig. '2 is a front elevation of the parts shown in Fig. 1.

My invention consists in a yielding shoulder adapted to press the blockof the last to ward the body of the last, and arranged upon that part ofthe jack which supports the rear part of the last, so that when the lastis in place on the jack the block will be held in place by the yieldingshoulder.

I11 the drawings, A represents the upper part of a jack, too well knownto require description, with a socket to receive the stem of acast-metal last,

B is the stem of the last, bits body, and b case it is not home beforethe last is placed upon the jack, tends to force it home.

It is advisable in most cases to use a second spring, d, as shown in thedrawings, especially where the last is of the. character shown in thedrawings, in order that the block may not be brought into rigid contactwith the plate d or the outer surface of the socket of the jack.

There are two classes of jacks now used for supporting lasts, in one ofwhich the upper part of the jack is a socket to receive a stem on thelast, substantially as shown in the drawings, and in the other of whichthe upper part of the jackis a heel-pin to enter a socket in the last;but it will be clear that my improve ment is equally applicable to boththese forms of jacks, as it relates to the yielding shoulder D, actingto support the block and hold it in proper relation with the body of thelast after the last is jacked, and not to the specific construction ofthe jack.

\Vhat I claim as my invention is I11 a jack for lasts, the yieldingshoulder D, adapted to force the block I) against the body I) when thelast is jacked, all substantially as described.

GEO. M. \VELLS.

Witnesses:

G. B. MAYNADIER, JOHN R. SNow. v

